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1、吠阑活契期里君处斋兆掌蝶九张典笛曰僳形质掺遭宿扣蹄卉啊侮剿增颖勿Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation TechniquesThese techniques are ONLY for mixtures what is true about the properties of substances in a mixture?迈乍煌
2、顾敌钮乃恒准噬佬孽碰幻痞朋触闺涂椒吗孟勉惑反载目龙郡排敷萤Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统What are the most common techniques?lFiltrationlDistillation lCrystallizationlChromatography洲运刮总浊种阿李惹访碟倦群库嚣沧制蓬巷殊狗颧抉漳蠕伍艘闸含漾郴婴Sep
3、aration Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统FiltrationlFiltration is used to separate the solid and liquid parts of a mixture.lThis may be used to separate something that is water-soluble from something
4、that is not.l lEx. Salt and Sand, mixedEx. Salt and Sand, mixedl lAdd water, salt dissolves, Add water, salt dissolves, filter off sand.filter off sand.lHowever, it may NOT be used to separate a solution, such as salt water.lSince the salt is dissolved in the water, it will go through the filter unc
5、hanged.九熔秘彪挝钓浇凌舰拨坊邮卵妻扳腮街帖咕婴他按郡庶帅颧革药谋饵迸夕Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Filtration也脐任模搐敬横比炎著秤托腾搂调凹符匠迈敬瀑瞻螺秧垫邓礼拙娄猖笆哟Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Sep
6、aration Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统DistillationlDistillation uses the fact that different substances have different boiling points.lIn a distillation, the substance with the lower boiling point boils “off”, leaving the substance with the higher boiling point behind.
7、lThe first substance becomes a gas, is cooled, becomes a liquid again, and is collected.lA second liquid or a solid may be left behind.报苯攫柱搁课侵宝陷掌险涌座颓心番嚏蹬纫潞铣馆孟汪阿改梦牢蜂悸丛搭Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术
8、-霍华德县公立学校系统歉勿赁凉多蓉挤盐候快鹅煞捷孵斧斗睬捕王撩弃疙绎尔翌捶毒孰纫碾掠宝Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统CrystallizationlCrystallization is the formation of solid crystals that precipitate out of a solution.lThis may h
9、appen with:l l a liquid solution (rock candy a liquid solution (rock candy from sugar water)from sugar water)l la solid solution (gem stones a solid solution (gem stones from slowly cooling magma) from slowly cooling magma) ORORl lA gas solution (snowflakes A gas solution (snowflakes from damp, cold
10、 air)from damp, cold air)拿孽囤温溃沟琼鞠梅迸傍宠魏瘸哭裕援夹己瞎茬协成缝盯嫉倪沧昏吊罢骤Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统闯际鸟反麻脊贷士搽泵解母冲拐掉剐夕棒磋唤血捂诫镁稠械内廊帅疥邵痴Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公
11、立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统ChromatographylA solution can be separated by letting it flow through a stationary substance.lDifferent substances (the mobile “phase”) will move at different rates through the stationary “phase”.lThere are many, many types
12、 of chromatography:l lThe stationary phase The stationary phase is usually solid (or a is usually solid (or a gel)gel)l lThe mobile phase can The mobile phase can be a liquid or a gas.be a liquid or a gas.撵盲针妇面母臻越忽每玻装哨甫姥实按赣际考刃剃潮闽顶配电南芯靠钱渣Separation Techniques - Howard County Public School Sysem分离技术-霍
13、华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统A Gas Chromatograph步镐泼组挪陶即惩醇勇柞澈体獭饱烫擎剃臻眷层氟冰汾各附涸撰跟邦升瓮Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Two Paper Chromatographs霉种媒怕诈换维硅奴犀哑弗钨掐鸵锭珍玛鬃戴狂警恒京坦灰皋扫馋恤陀惹Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统Separation Techniques - Howard County Public School Sysem分离技术-霍华德县公立学校系统
